High gain circularly polarized resonance cavity antenna at X-band

Ganaraj, G.; Kumar, Chandrakanta; Kumar, V. Senthil; Shankaraiah,

doi:10.1109/iaim.2017.8402554

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…In this paper, we have adapted the method of optimal selection of square elements for the superstrate layer introduced in [17] for LP antennas to design and manufacture a left-handed circularly polarized (LHCP) superstrate antenna for CubeSat X-band communication. The proposed antenna has reduced cross-polarization radiation and smaller overall dimension compared to the previous CP superstrate antenna designs [13], [19]. The result of this work is a compact lightweight antenna that was fabricated and measured.…”

Section: Introductionmentioning

confidence: 90%

“…In order to increase the reflection coefficient of this structure, an array of metal parasitic patches is arranged on the bottom side of the layer [17]. Because uniform size of superstrate elements proposed in [13] cause high crosspolarization radiation [19], we have used square shape of passive elements that are distributed in a 5 × 5 rectangular grid symmetrical with respect to the x-and y-axes, which was proposed as optimal for a LP superstrate antenna [17]. The geometry of the proposed superstrate layer is presented in Fig.…”

Section: B Superstrate Designmentioning

confidence: 99%

“…The gain of a single-patch antenna can be effectively improved by placing an additional layer above the patch [13]- [18]. The improvement of the antenna parameters can be realized by applying a set of holes in the superstrate layer [14], [15] or by placing an array of printed parasitic patches with equal sizes and constant interelement spacing [13], [16]. In [17], varied elements, optimally selected in number and size of particular passive elements, were used to optimize gain, side-lobe level (SLL) and beamwidth of a linearly polarized (LP) superstrate antenna.…”

Section: Introductionmentioning

confidence: 99%

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High-Gain Compact Circularly Polarized X-Band Superstrate Antenna for CubeSat Applications

Leszkowska

Rzymowski

Nyka

et al. 2021

Antennas Wirel. Propag. Lett.

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In this letter, a concept of high-gain circularly polarized X-band antenna employing a partially reflecting surface (PRS) has been presented. In the initial antenna analysis, the influence of parasitic elements size in the PRS structure on antenna radiation pattern parameters has been investigated and the optimal arrangement of the elements has been identified. The proposed antenna provides wide bandwidth of return loss above 10 dB of 20% (8-9.8 GHz) and circular polarization in a frequency range 8.35-8.95 GHz. The final design is compact (62 × 62 × 22.2 mm) and lightweight (29.7 g), which makes it suitable for use in CubeSat X-band communication systems but also drone and high-altitude pseudo-satellite (HAPS) applications.

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Section: Introductionmentioning

confidence: 90%

Section: B Superstrate Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-Gain Compact Circularly Polarized X-Band Superstrate Antenna for CubeSat Applications

Leszkowska

Rzymowski

Nyka

et al. 2021

Antennas Wirel. Propag. Lett.

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“…Circularly polarized (CP) radio-frequency (RF) front-end antennas are preferred for wireless communication systems to minimize losses due to polarization mismatch when at least one of the two communicating terminals is not stationary [1]- [4]. For long-distance communication such as satellite connectivity, additionally, high-gain antennas with extremely focused energy beams are required to cater for free-space losses [5]- [10].…”

Section: Introductionmentioning

confidence: 99%

Method to Enhance Directional Propagation of Circularly Polarized Antennas by Making Near-Electric Field Phase More Uniform

Afzal

Lalbakhsh

2021

IEEE Trans. Antennas Propagat.

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A new approach to significantly increase the uniformity in aperture phase distribution, through time synchronization in near-electric field, of circularly polarized (CP) antennas is presented. The method uses the phase of the CP electric field vectors, obtained through full-wave numerical simulations, and does not rely on any approximation such as ray tracing. The near-field data is post-processed to extract the relative phase difference that exist due to the unsynchronized rotations of the electric field vectors in a plane parallel to the antenna aperture. The phase delay is compensated with a thin time-synchronizing metasurface (TSM) that has a 2D array of time-delay cells. The method is demonstrated with a prototype made of two-port patch antenna, which is fed through a hybrid junction, and a TSM that is placed at one wavelength spacing above the patch. When TSM is used with patch antenna, its uniform phase area increases manyfold thus increasing far-field directivity from 6.8 dBic to 22 dBic.

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A broadband circularly polarized Fabry Perot antenna with spatially separated superstrate area excitation for CubeSat applications

Abegaonkar

Basu

2023

Sci Rep

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This article describes the development of a high-gain, broadband, circularly polarized Fabry–Perot cavity (FPC) antenna for high-data-rate communication in CubeSat/SmallSat applications. In this work, the concept of spatially separated superstrate area excitation is developed for the first time in FPC antennas. This concept is then validated and applied to increase the gain and the axial ratio bandwidth of a conventional narrowband circularly polarized source patch antenna. The antenna’s design leverages independent control of polarization at different frequencies, resulting in a large overall bandwidth. The fabricated prototype antenna provides right hand circular polarization with a peak measured gain of 15.73 dBic over a common bandwidth of 1.03 GHz ranging from 7.99 GHz to 9.02 GHz. The gain variation over the bandwidth is less than 1.3 dBic. The antenna measures 80 mm × 80 mm × 21.14 mm and is simple, lightweight, easily integrable with CubeSat body, and useful for X-Band data downlink. When integrated with the metallic body of a 1U CubeSat, the simulated gain of the antenna increases to 17.23 dBic, with a peak measured gain of 16.83 dBic. A deployment method is proposed for this antenna that results in a total stowed volume of only 2.13λo × 2.13λo × 0.084λo (0.38 $${\lambda }_{o}^{3}$$ λ o 3 ).

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High gain circularly polarized resonance cavity antenna at X-band

Cited by 5 publications

References 11 publications

High-Gain Compact Circularly Polarized X-Band Superstrate Antenna for CubeSat Applications

High-Gain Compact Circularly Polarized X-Band Superstrate Antenna for CubeSat Applications

Method to Enhance Directional Propagation of Circularly Polarized Antennas by Making Near-Electric Field Phase More Uniform

A broadband circularly polarized Fabry Perot antenna with spatially separated superstrate area excitation for CubeSat applications

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